利用粉煤灰制备高纯超细氧化铝粉体的研究

利用粉煤灰为原料制备高纯超细氧化铝粉体。给出了采用硅酸二钙晶相转变自粉化、高效分散剂———碳化法从粉煤灰中制备氧化铝方法的工艺路线 ,确定了从粉煤灰制备高纯超细氧化铝粉体的最佳工艺条件 ,为粉煤灰的高价值利用开辟了一条新途径     

内蒙古农牧业生态环境问题及可持续发展对策

本文分析了内蒙古农牧业生态环境存在的主要问题，提出了改善内蒙古农牧业生态环境的基本思路重点任务和应注意的问题。     

Service transformation—managing a shift from business travel to virtual meetings

It has been shown that the potential for environmental, and financial improvements through the increased substitution of in-person meetings by virtual communication is considerable. However, it has also been shown that this potential is not automatically realized by investing in the technology that can enable virtual meetings. This paper describes two case studies that explored the factors that influenced communication and meeting behavior. A number of drivers and barriers for virtual meetings are identified, and, in addition, measures are proposed to improve the utilization of virtual tools for business communication.     

用锅炉冲渣水为水源的湿式除尘器脱硫

通过对大连重工集团五台文丘里—麻石除尘器脱硫率的测定、各关键点pH值的测定、渣池中各金属含量的测定，说明了以锅炉冲渣水为水源进行湿法除尘，既经济又可达到稳定脱硫的目的。     

燃烧型煤排放可吸入尘中的成分分析

主要运用X 射线荧光光谱的半定量分析方法 ,测量了民用炉灶燃烧型煤排放的可吸入尘中的主要成分 ,从而得出在可吸入尘中的主要元素为Cl、S、Na、K ,并研究了其产生的原因     

新型炉窑烟气湿式脱硫除尘技术

针对炉窑烟气净化问题 ,开发研制新型湿式脱硫除尘系列装置。实验表明 ,该技术除尘效率达 98.5 % ,脱硫效率为 80 % ,具有实用价值。     

废旧家电产品回收性能评价指标体系的建立

针对家电产品回收工艺流程决策评价的多阶段、多目标的特点,以及不同类型家电产品和不同回收工艺过程的动态特性,采用层次分类方法建立了以经济指标和环境指标为主要内容的回收工艺流程评价指标体系,对指标体系的组成进行了较为详细的分析,讨论了应该考虑的因素及有关计算方法。以电冰箱为例,用改进的模糊层次分析法与遗传算法相结合,介绍了回收工艺流程的优化决策方法。建立的指标体系不仅可以根据评价对象进行动态修改,而且具有较强的可操作性。     

连江地热水排放对水体、土壤和农作物的影响研究

探讨了连江地热水利用排放对水体、土壤农作物、鱼类的影响，为今后保护环境和合理开发利用地热水提供科学依据。     

Elemental sulfur effects on Pb and Zn uptake by Indian mustard and winter wheat

A pot experiment was conducted to investigate the influence of elemental sulfur to contaminated soil on plant uptake by a heavy metal hyperaccumulator, Indian mustard( Brassica juncea ) and a field crop, winter wheat( Triticum. aestivum). Elemental sulfur(S) with different rates was carried out, they were 0(S0 ), 20(S20 ), 40(S40 ), 80(S80 ), and 160(S160 ) mmol/kg respectively. Extra pots with the same rates of S but without plants were used for soil sampling to monitor pH and CaCl2-extractable heavy metal changes. The results showed that S enhanced phytoextraction of Pb and Zn from contaminated soil. Application S effectively decreased soil pH down to 1.1 as the most at the rate of Sl60. The concentrations of CaCl2-extractable Pb and Zn in soil and uptake of Pb and Zn by the plants were increased with soil pH decreased. A good correlation between CaCl2-extractable Pb/Zn and soil pH was found( Rpb^2 = 0.847 and RZn^2 = 0,991, n = 25). With S application, soil CaCl2-extractable Pb and Zn concentrations, concentration of Pb and Zn in plants and the amount of removal by plant uptake were significanfly higher than those without S. Under the treatment of S160, the highest CaCl2-extmctable Pb and Zn were observed, they were 4.23 mg/kg and 0.40 mg/kg, 2.7 and 2.0 times as that of the control(So ) respectively. At the highest rates of S( Sl~0 ), both Indian mustard and winter wheat reached the highest uptake of Pb and Zn. The highest Pb concentrations in wheat and Indian mustard were 32.8 mg/kg and 537.0 mg/kg, all 1.8 times as that of the control, and the highest Zn concentrations in wheat and Indian mustard were 215.5 mg/kg and 404.0 mg/kg, 2.4 and 2.0 times as that of the control respectively. The highest removals of Pb and Zn from the contaminated soil were 0.41 rag/pot and 0.31 nag/pot by Indian mustard in the treatment of S160 through 50 days growth.     

石油化工生产中的吸收过程防火

吸收操作在石油化工企业应用广泛，但其过程存在大量的易燃可燃物质，有形成爆炸性浓度的可能性，设备内压易升高，设备易腐蚀，生产中可能产生引火源，发生事故相互影响大等火灾特点。本文根据工艺及设备特点，分析了其生产过程中存在的危险因素和条件，总结了火灾爆炸事故的预防措施与技术。